Model: 6LR61 Size: 9V Duration: 850 mins Capacity: 550 mAh Chemical System: Zn/KOH_H2O/MnO2 Nominal voltage: 9V Average weight: 43G Jacket: Foil Label Alkaline batteries Mercury free, cadmium free, lead free, environmentall-friendly alkaline batteries IEC standard, CE, RoHS, SGS, ISO Approved OEM is acceptable. Super high discharge rate, high quality lower price Matching products: Remote controler, LED lights, Smoke alarm, Flash lights, digital cameras, clocks, electrical brushes etc. Main market: Europe, USA, South America, Southeast Asia Permanet aim: Better service and quality